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TimeoutTask.cs

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using Medallion.Threading.Internal;

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading;

using System.Threading.Tasks;

namespace Medallion.Threading.Redis

{

/// <summary>

/// Acts as a <see cref="Task.Delay(TimeSpan, CancellationToken)"/> which is cleaned up when

/// the <see cref="TimeoutTask"/> gets disposed

/// </summary>

internal readonly struct TimeoutTask : IDisposable

{

private readonly CancellationTokenSource _cleanupTokenSource;

private readonly CancellationTokenSource? _linkedTokenSource;

public TimeoutTask(TimeoutValue timeout, CancellationToken cancellationToken)

{

this._cleanupTokenSource = new CancellationTokenSource();

this._linkedTokenSource = cancellationToken.CanBeCanceled

? CancellationTokenSource.CreateLinkedTokenSource(cancellationToken, this._cleanupTokenSource.Token)

: null;

this.Task = Task.Delay(timeout.TimeSpan, this._linkedTokenSource?.Token ?? this._cleanupTokenSource.Token);

}

public Task Task { get; }

public void Dispose()

{

try { this._cleanupTokenSource.Cancel(); }

finally

{

this._linkedTokenSource?.Dispose();

this._cleanupTokenSource.Dispose();

}

}

}

}